They are very large, and consist of mostly gases.
Planets are categorized as either Jovian or terrestrial based on their composition and physical characteristics. Jovian planets are large gas giants with no solid surface, while terrestrial planets are rocky with a solid surface. Jovian planets are typically further from the sun than terrestrial planets.
Mercury is not a jovian planet because all planets after Jupiter and Jupiter are all jovian planets. So Jupiter, Saturn , Uranus , Neptune and the poor old Pluto that was booted from the planets are all jovian.
Jovian means Jupiter-like - these planets are made of gas and are several times more massive than the Earth - like Jupiter.
Jovian Planets do not have a solid surface to stand on.
Inner planets are terrestrial planets outer are jovian planets
Jovian planets generally have larger diameters than terrestrial planets. The average diameter of terrestrial planets like Earth is around 12,742 km, while the average diameter of Jovian planets like Jupiter is around 139,822 km. This difference is due to Jovian planets being mostly composed of gases and having less dense materials compared to the rocky composition of terrestrial planets.
Jupiter is a Jovian Plant. The adjective Jovian has come to mean anything associated with Jupiter; and by extension, a Jupiter-like planet. The Jovian planets are the gas giants: Jupiter, Saturn, and Neptune. Many, if not most, of the exoplanets discovered to date appear to be Jovian. By contrast, terrestrial, aka telluric, aka rocky planets differ significantly from the gas giant/Jovian planets in that they are composed primarily of metals and silicate rocks (hence "rocky" planets) like Earth, aka Terra (from which we get the word terrestrial) and are "Earth-like" as opposed to "jupiter-like"/Jovian. The terrestrial planets are Mercury, Venus, Earth, and Mars. All the dwarf planets are also more terrestrial than jovian.
Jovian planets are: -gaseous -farthest planets from the sun -largest planets
The Jovian planets are gas giants and have no surface.
Terrestrial planets are rocky, smaller, and closer to the Sun, such as Mercury, Venus, Earth, and Mars. Jovian planets are gas giants, larger, and further from the Sun, such as Jupiter, Saturn, Uranus, and Neptune. Jovian planets have thick atmospheres mainly composed of hydrogen and helium, while terrestrial planets have thin atmospheres and solid surfaces.
The four Jovian planets
No. The Jovian planets are much more massive than the terrestrial planets.